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Chapter 1 General Troubleshooting
Symptom
Table 1-28
Table 1-28
Possible Problem
A loss of power or low
voltage reading.
An improperly
connected power
supply.
Operations that interrupt power supply or short the power connections to the ONS 15600 SDH are
Caution
service-affecting.
The power supply circuitry for the equipment can constitute an energy hazard. Before you install or
Warning
replace the equipment, remove all jewelry (including rings, necklaces, and watches). Metal objects
can come into contact with exposed power supply wiring or circuitry inside the equipment. This
could cause the metal objects to heat up and cause serious burns or weld the metal object to the
equipment. Statement 207
Warning
Static electricity can damage electro-optical modules. While handling electro-optical module, wear
a grounding wrist strap to discharge the static buildup. Wrist straps are designed to prevent static
electricity damage to equipment. Statement 312
Isolate the Cause of Power Supply Problems
Step 1
If a single ONS 15600 SDH show signs of fluctuating power or power loss:
a.
b.
c.
d.
e.
f.
g.
July 2010
Loss of power or low voltage, resulting in a loss of traffic.
describes the potential causes of the symptom and the solutions.
Power Supply Problems
Solution
The ONS 15600 SDH requires a constant source of DC power to properly
function. Input voltage range is from –40.5 VDC to –72 VDC.
A newly installed ONS 15600 SDH that is not properly connected to its
power supply will not operate. Power problems can be confined to a specific
ONS 15600 SDH or affect several pieces of equipment on the site.
A loss of power or low voltage can result in a loss of traffic.
See the
page
Verify that the –48 VDC power terminals are properly connected to the power distribution unit
(PDU).
Verify that the power cable is in good condition.
Verify that the power cable connections are properly crimped.
Verify that 50-A circuit breakers are used in the PDU.
Verify that the circuit breakers are not blown or tripped.
Verify that a rack-ground cable attaches to the frame-ground terminal (FGND) on the
ONS 15600 SDH. Connect this cable to the ground terminal according to local site practice.
Verify that the DC power source has enough capacity to carry the power load.
"Isolate the Cause of Power Supply Problems" procedure on
1-75.
Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
1.10 Power Supply Problems
1-75
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Table of Contents
Troubleshooting
